Mauzer_Milovanović_M._1880
Mauser-Koka
Service rifle
In 1880, Serbian Major Kosta "Koka" Milovanović (Коста "Кока" Миловановић) developed an updated version of the Mauser Model 1871, still single-shot, but chambered in its unique 10.15×63R caliber. It had unique additions in that it had a bolt guide (much like the M1870 Italian Vetterli) and the "progressive rifling" that was developed by Koka. The Kingdom of Serbia adopted the rifle in 1880.[1] It was designated Serbian Model 1878/80, also known as Mauser-Koka, Mauser-Milovanović,[2] and known in Serbian as Kokinka (Кокинка). The grooves reduced in diameter from breech to muzzle. The muzzle velocity of the Mauser-Milanović was 1,680 feet per second (510 m/s). It saw first combat in the Serbo-Bulgarian War. Approximately 110,000 Mauser-Milovanović rifles entered the Serbian arsenal. It was further developed in 1907.